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Search Results: 1 - 10 of 130756 matches for " V.V. Mazur "
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Clinical and functional features of patients with isolated systolic hypertension
E.S. Mazur,V.V. Mazur,D.Yu. Platonov,D.V. Kileynikov
Rational Pharmacotherapy in Cardiology , 2012,
Abstract: Aim. To compare vasomotor endothelial function, aortic elastic properties and characteristics of left ventricular (LV) remodeling in patients with isolated systolic (ISHT) and sistolo-diastolic (SDHT) hypertension.Material and methods. Echocardiography, assessment of aorta elastic properties and endothelial vasomotor function were performed in 24 ISHT patients (mean age 73.6 years, mean disease duration 24.8 years) and 52 SDHT patients (mean age 58.0 years, mean disease duration 12.8 years). The age of hypertension onset did not differ significantly in patients of both groups.Results. Aorta elastic coefficient in ISHT patients was 6 times lower than this in SDHT patients (1.00 vs 6.36 mm2/mm Hg, respectively), and vasodilation coefficient (which reflects an ability of vessels to expanding in response to blood flow acceleration) less on 35% (10.9 vs 16.8 standard units, respectively). Patients of ISHT and SDHT groups did not differ in thickness of the interventricular septum (14.8 vs 14.3 mm, respectively), and LV ejection fraction (59.9 vs 60.4%, respectively). However, LV posterior wall thickness in ISHT patients was 3.0 mm less than this in SDHT patients, as well as amplitude of systolic displacement of LV fibrous ring (which reflects LV longitudinal systolic function) was 0.9 cm bigger, respectively.Conclusion. Elderly age, aorta high stiffness, asymmetric LV hypertrophy and impaired LV longitudinal systolic function are typical clinical and functional features of ISHT patients.
Heart remodeling at different stages of chronic heart failure in patients with postinfarction cardiosclerosis and dilated cardiomyopathy
V.V. Mazur,A.M. Kalinkin,E.S. Mazur
Rational Pharmacotherapy in Cardiology , 2010,
Abstract: Aim. To study the features of cardiac remodeling in patients with dilated cardiomyopathy (DCM) and postinfarction cardiosclerosis (PICS), that can be used for differential diagnosis of these diseases.Material and methods. Patients with DCM (27 men and 5 women; aged 43.1±2.3) and patients with PICS (62 men; aged 56.4±1.1) and chronic heart failure (CHF) were included in the study. The diagnosis of DCM was based on clinical investigation, which also includes coronary angiography. The diagnosis of DCM in 19 patients was proven by the results of postmortem investigation. The diagnosis of PICS was based on documented history of myocardial infarction, ECG and echocardiographic sings. Echocardiography was performed in all patients and 14 healthy volunteers.Results. End-systolic size (ESS) of left ventricular (LV) in patients with DCM and PICS at I (respectively 7.60±0.17 and 7.94±0.18 cm), IIA (7.66±0.28 and 8.64±0.30 cm) and IIB stages of CHF (8.26±0.28 and 8.94±0.15 cm) was significantly more than this in healthy volunteers (6.36±0.16, all p<0.01). ESS of right ventricular (RV) in DCM patients of the same CHF stages (respectively 7.21±0.22, 7.40±0.27 and 8.23±0.27 cm) is also more than this in healthy volunteers (5.95±0.17, all p<0.01). ESS RV in PICS patients at I (5.40±0.11 cm) and IIA (5.80±0.26 cm) CHF stages did not differ from healthy volunteers, and this index risen to IIB stage (6.62±0.21 cm), but was lower than in DCM patients.The ESS LV/ESS RV ratio at any CHF stage in PICS patients was significantly higher than this in DCM patients (1.48±0.04 and 1.06±0.02, 1.50±0.05 and 1.04±0.02, 1.37±0,06 and 1.00±0.01, respectively).Conclusion. The ESS LV/ESS RV ratio can be used for differential diagnosis of dilatation in DCM and PICS patients.
Thermoelectrical Investigation of Rare Earth Sulfide Materials  [PDF]
V.V. Sokolov, V.V. Bakovetz, S.M. Luguev, N.V. Lugueva
Advances in Materials Physics and Chemistry (AMPC) , 2012, DOI: 10.4236/ampc.2012.24B007
Abstract: Results  are presented on synthesis   and crystal growth of  Gd2S3-Dy2S3 solid solution sulfides and study of their thermoelectric properties in the range of temperatures 80-400 K. Gd0.2Dy0.8S1.48 composition has the best values of thermoelectric efficiency 0.39 x 10-3/K at 400 K.
Reflectors for VCN and applications of VCN
Nesvizhevsky, V.V.;
Revista mexicana de física , 2011,
Abstract: present contribution is based on the talk given at the vi international symposium on radiation physics in zacatecas (méxico). it summarizes recent developments on nanoparticle reflectors for very cold neutrons (vcn). particular attention is devoted to powders of detonation nano-diamonds, possessing exceptional properties for such reflectors. examples of vcn applications in particle and nuclear physics are given.
The Use of Cryodestruction in Ingrown Nail Treatment in Polyclinic
V.V. Slonimsky
Sovremennye Tehnologii v Medicine , 2012,
Abstract: The aim of the investigation is to study the possibilities of using modern combined cryodestruction technique to treat ingrown nail in polyclinic surgeries. Materials and methods. There have been analyzed the results of complex cryosurgical treatment of ingrown nail in 17 patients with various degree of pathological process. 17 patients of the control group underwent traditional surgical treatment.Conclusion. Cryosurgical method of treating patients with ingrown nail is least traumatic, cost-effective. It contributes to rapid rehabilitation, improvement of patient’s life quality, vocational rehabilitation, and has a good cosmetic effect.
Prognosis of Prolonged Clinical Course Variants of Neonatal Conjugated Hyperbilirubinemia
V.V. Solntsev
Sovremennye Tehnologii v Medicine , 2011,
Abstract: The purpose of the study is to reveal risk factors that have a reliable effect on prolonged clinical course variants of prolonged conjugated hyperbilirubinemia.Materials and Methods. There has been carried out a prospective study of clinical biological indexes in 100 children aged from 4 weeks to 3 months with manifestations of a prolonged variant of conjugated hyperbilirubinemia and 40 children without these manifestations.Results. Based on the analysis of dynamics of total bilirubin level decrease and the characteristics of prolonged course of hyperbilirubinemia, there have been distinguished three variants of pathological condition: benign, undulating and resistant. And prognostic criteria of forming prolonged variants of neonatal conjugated hyperbilirubinemia have been determined.
Peculiarities of a Penial Hemodynamics in Patients with a Cerebrovascular Pathology (New Aspects)
V.V. Klochai
Sovremennye Tehnologii v Medicine , 2010,
Abstract: Aim of investigation is assessment of the hemodynamic disturbance influence in patients with a cerebrovascular pathology on the erectile functions.Materials and methods. 171 patients with a dyscirculatory encephalopathy, 96 — with initial manifestations of a cerebral circulation insufficiency, 92 — with consequences of ischemic insult were examined with a method of ultrasonic doplerography with a spectral analysis.Results. The arterial inflow disturbances in patients with a dyscirculatory encephalopathy were revealed in a half of cases, however they were faintly expressed, and a functional possibility of cavernous bodies is conserved in majority of cases. A venous hemodynamics disturbance in a penis in patients with the cerebrovascular diseases is revealed in more than a quarter of humans with ischemic insult and in 8.7% of humans with a dyscirculatory encephalopathy. The critical disturbances of a venous hemodynamics in a penis are not revealed in patients with initial manifestations of a cerebral circulation disturbance.A participation of erectile dysfunction in a pathogenesis at the vascular factor cerebrovascular diseases is confirmed, and moreover both arterial and venous systems of a penis circulation are affected, frequently in combination with each other.
DYNAMICS OF ALGAE NUMBER AND BIOMASS OF STEPPE BIOGEOCOENOSES AND AGROCOENOSES IN KHERSON REGION
Shcherbina V.V.
Bìologì?nij Vìsnik Melìtopol?s?kogo Der?avnogo Pedagogì?nogo Universitetu ìmenì Bogdana Hmel?nic?kogo , 2011,
Abstract: Characteristics of daily dynamics of seaweeds abundance and biomass were determined for steppe biogeocoenosis and agrocoenosis of Biosphere reserve “Askaniya-Nova” in spring of 2011. Fluctuation ranges in seaweeds abundance and biomass have been registered.Analyzing the indices of total number and algae biomass in studied biogeocoenoses it should be noted that the maximal values of alga number in virgin soil steppe exceeded minimal in 3,3 times; biomasses - in 2,1. For virgin soil steppe of post-fire-induced development the relation between maximum and minimal value of total number of algae was up to 2,1; biomass - 2,4. For agrocoenosis we noted the largest ranges in variation of number and biomass. In conditions of dry-land arable land the maximum values of total number of alga exceeded minimal in 21,9 times; biomasses - in 8,7; for irrigated arable land - in 12,5 and 5,6 respectively.In soil samples, selected within the limits of virgin soil biogeocoenoses of biosphere reserve “Askania-Nova” and agrocoenosis of dry-land and irrigated arable land in biosphere reserve by direct count, the algae species of Bacillariophyta, Cyanophyta, Chlorophyta, Xanthophyta and Eustigmatophyta have been found. The largest contribution to number and biomass of algae belonged to Bacillariophyta. The number and biomass of agrocoenosis algae is more dynamic feature, than for algae of virgin soil biogeocoenoses.
MACROMYCETES OF DUMPING SITES AS BIOINDICATORS OF ANTHROPOGENIC EDAPHOTOP STATUS
Popovych V.V.
Bìologì?nij Vìsnik Melìtopol?s?kogo Der?avnogo Pedagogì?nogo Universitetu ìmenì Bogdana Hmel?nic?kogo , 2012,
Abstract: We studied the development of the macromycetes on anthropogenic edaphotop of dumping sites in western wooden-steppes of Ukraine. We considered principal ecological factors, namely acidity, temperature, and connectivity of edaphotop; humidity, temperature, and air humidity, atmospheric pressure, wind speed, equivalent dose of ionizing radiation in the surface ground of macromycetes habitats. The species diversity of macromycetes in dumping sites of western wooden-steppes of Ukraine was considerably low (Simpson index: 0,91; Shannon index: -1,9). Species evenness was calculated by indices of Simpson and Shannon was rather low: 0,43 and -2,71 correspondingly; this indicated limited development of fungi. The main factors were violation of natural environment of macromycetes biotopes and anthropogenic pressure on their development as a result of aerobic and anaerobic processes that occur within the dumping sites. We founded that macromycetes could be bioindicators of the anthropogenic edaphotop of the dumping sites.
Designing of steel frameworks from thin-walled cold-formed profiles in SCAD Office
V.V. Yurchenko
Magazine of Civil Engineering , 2010,
Abstract: This paper is devoted to computer-aided designing of steel frameworks from thin-walled cold-formed profiles. It has been shown that the wide utilization of building structures from thin-walled cold-formed profiles produced domestically is restricted, first of all, by shortcoming of national building standards and requirements, as well as insufficient domestic experience in economic and reliable designing of such kind of steel structures. The main attention has been paid to the structural analysis and determination of the internal forces in structural members from thin-walled cold-formed profiles taken into account restricted torsion deformations. Some scientific issues under the buckling behavior of the structural members from thin-walled cold-formed profiles, as well as post-buckling behavior of these elements after the local buckling of the compressed cross-sectional parts has been presented.As example, computer-aided design for the steel framework of typical warehouse building of company Llentabhallen Sp.z.o.o. using SCAD Office has been presented. In this example the particularities of the 3D finite element modeling of the steel frameworks from cold-formed thin-walled profiles has been also presented.
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